551
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Chiaradonna F, Cirulli C, Palorini R, Votta G, Alberghina L. New Insights into the Connection Between Histone Deacetylases, Cell Metabolism, and Cancer. Antioxid Redox Signal 2015; 23:30-50. [PMID: 24483782 DOI: 10.1089/ars.2014.5854] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
SIGNIFICANCE Histone deacetylases (HDACs) activity and cell metabolism are considered important targets for cancer therapy, as both are deregulated and associated with the onset and maintenance of tumors. RECENT ADVANCES Besides the classical function of HDACs as HDAC enzymes controlling the transcription, it is becoming increasingly evident that these proteins are involved in the regulation of several other cellular processes by their ability to deacetylate hundreds of proteins with different functions in both the cytoplasm and the nucleus. Importantly, recent high-throughput studies have identified as important target proteins several enzymes involved in different metabolic pathways. Conversely, it has been also shown that metabolic intermediates may control HDACs activity. Consequently, the acetylation/deacetylation of metabolic enzymes and the ability of metabolic intermediates to modulate HDACs may represent a cross-talk connecting cell metabolism, transcription, and other HDACs-controlled processes in physiological and pathological conditions. CRITICAL ISSUES Since metabolic alterations and HDACs deregulation are important cancer hallmarks, disclosing connections among them may improve our understanding on cancer mechanisms and reveal novel therapeutic protocols against this disease. FUTURE DIRECTIONS High-throughput metabolic studies performed by using more sophisticated technologies applied to the available models of conditional deletion of HDACs in cell lines or in mice will fill the gap in the current understanding and open directions for future research.
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Affiliation(s)
- Ferdinando Chiaradonna
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
| | - Claudia Cirulli
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
| | - Roberta Palorini
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
| | - Giuseppina Votta
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
| | - Lilia Alberghina
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
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552
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Huang Z, Cai L, Tu BP. Dietary control of chromatin. Curr Opin Cell Biol 2015; 34:69-74. [PMID: 26094239 DOI: 10.1016/j.ceb.2015.05.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 05/19/2015] [Accepted: 05/20/2015] [Indexed: 12/28/2022]
Abstract
Organisms must be able to rapidly alter gene expression in response to changes in their nutrient environment. This review summarizes evidence that epigenetic modifications of chromatin depend on particular metabolites of intermediary metabolism, enabling the facile regulation of gene expression in tune with metabolic state. Nutritional or dietary control of chromatin is an often-overlooked, yet fundamental regulatory mechanism directly linked to human physiology. Nutrient-sensitive epigenetic marks are dynamic, suggesting rapid turnover, and may have functions beyond the regulation of gene transcription, including pH regulation and as carbon sources in cancer cells.
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Affiliation(s)
- Zhiguang Huang
- Department of Biochemistry, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Ling Cai
- Children's Medical Center Research Institute, UT Southwestern Medical Center, 6000 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Benjamin P Tu
- Department of Biochemistry, UT Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA.
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553
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The cytotoxicity of 3-bromopyruvate in breast cancer cells depends on extracellular pH. Biochem J 2015; 467:247-58. [PMID: 25641640 DOI: 10.1042/bj20140921] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Although the anti-cancer properties of 3BP (3-bromopyruvate) have been described previously, its selectivity for cancer cells still needs to be explained [Ko et al. (2001) Cancer Lett. 173, 83-91]. In the present study, we characterized the kinetic parameters of radiolabelled [14C] 3BP uptake in three breast cancer cell lines that display different levels of resistance to 3BP: ZR-75-1 < MCF-7 < SK-BR-3. At pH 6.0, the affinity of cancer cells for 3BP transport correlates with their sensitivity, a pattern that does not occur at pH 7.4. In the three cell lines, the uptake of 3BP is dependent on the protonmotive force and is decreased by MCTs (monocarboxylate transporters) inhibitors. In the SK-BR-3 cell line, a sodium-dependent transport also occurs. Butyrate promotes the localization of MCT-1 at the plasma membrane and increases the level of MCT-4 expression, leading to a higher sensitivity for 3BP. In the present study, we demonstrate that this phenotype is accompanied by an increase in affinity for 3BP uptake. Our results confirm the role of MCTs, especially MCT-1, in 3BP uptake and the importance of cluster of differentiation (CD) 147 glycosylation in this process. We find that the affinity for 3BP transport is higher when the extracellular milieu is acidic. This is a typical phenotype of tumour microenvironment and explains the lack of secondary effects of 3BP already described in in vivo studies [Ko et al. (2004) Biochem. Biophys. Res. Commun. 324, 269-275].
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554
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Pietrocola F, Galluzzi L, Bravo-San Pedro JM, Madeo F, Kroemer G. Acetyl coenzyme A: a central metabolite and second messenger. Cell Metab 2015; 21:805-21. [PMID: 26039447 DOI: 10.1016/j.cmet.2015.05.014] [Citation(s) in RCA: 889] [Impact Index Per Article: 98.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Acetyl-coenzyme A (acetyl-CoA) is a central metabolic intermediate. The abundance of acetyl-CoA in distinct subcellular compartments reflects the general energetic state of the cell. Moreover, acetyl-CoA concentrations influence the activity or specificity of multiple enzymes, either in an allosteric manner or by altering substrate availability. Finally, by influencing the acetylation profile of several proteins, including histones, acetyl-CoA controls key cellular processes, including energy metabolism, mitosis, and autophagy, both directly and via the epigenetic regulation of gene expression. Thus, acetyl-CoA determines the balance between cellular catabolism and anabolism by simultaneously operating as a metabolic intermediate and as a second messenger.
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Affiliation(s)
- Federico Pietrocola
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; INSERM U1138, 75006 Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France; Université Pierre et Marie Curie/Paris VI, 75006 Paris, France; Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France
| | - Lorenzo Galluzzi
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; INSERM U1138, 75006 Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France; Université Pierre et Marie Curie/Paris VI, 75006 Paris, France; Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France
| | - José Manuel Bravo-San Pedro
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; INSERM U1138, 75006 Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France; Université Pierre et Marie Curie/Paris VI, 75006 Paris, France; Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France
| | - Frank Madeo
- Institute of Molecular Biosciences, NAWI Graz, University of Graz, 8010 Graz, Austria; BioTechMed-Graz, 8010 Graz, Austria.
| | - Guido Kroemer
- Equipe 11 labellisée Ligue contre le Cancer, Centre de Recherche des Cordeliers, 75006 Paris, France; INSERM U1138, 75006 Paris, France; Université Paris Descartes/Paris V, Sorbonne Paris Cité, 75006 Paris, France; Université Pierre et Marie Curie/Paris VI, 75006 Paris, France; Metabolomics and Cell Biology Platforms, Gustave Roussy Comprehensive Cancer Institute, 94805 Villejuif, France; Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, 75015 Paris, France.
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555
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Khan S, Jena G. The role of butyrate, a histone deacetylase inhibitor in diabetes mellitus: experimental evidence for therapeutic intervention. Epigenomics 2015; 7:669-80. [DOI: 10.2217/epi.15.20] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The contribution of epigenetic mechanisms in diabetes mellitus (DM), β-cell reprogramming and its complications is an emerging concept. Recent evidence suggests that there is a link between DM and histone deacetylases (HDACs), because HDAC inhibitors promote β-cell differentiation, proliferation, function and improve insulin resistance. Moreover, gut microbes and diet-derived products can alter the host epigenome. Furthermore, butyrate and butyrate-producing microbes are decreased in DM. Butyrate is a short-chain fatty acid produced from the fermentation of dietary fibers by microbiota and has been proven as an HDAC inhibitor. The present review provides a pragmatic interpretation of chromatin-dependent and independent complex signaling/mechanisms of butyrate for the treatment of Type 1 and Type 2 DM, with an emphasis on the promising strategies for its drugability and therapeutic implication.
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Affiliation(s)
- Sabbir Khan
- Facility for Risk Assessment & Intervention Studies, Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research, Sector-67, S.A.S. Nagar, Punjab 60 062, India
| | - Gopabandhu Jena
- Facility for Risk Assessment & Intervention Studies, Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education & Research, Sector-67, S.A.S. Nagar, Punjab 60 062, India
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556
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O'Keefe SJD, Li JV, Lahti L, Ou J, Carbonero F, Mohammed K, Posma JM, Kinross J, Wahl E, Ruder E, Vipperla K, Naidoo V, Mtshali L, Tims S, Puylaert PGB, DeLany J, Krasinskas A, Benefiel AC, Kaseb HO, Newton K, Nicholson JK, de Vos WM, Gaskins HR, Zoetendal EG. Fat, fibre and cancer risk in African Americans and rural Africans. Nat Commun 2015; 6:6342. [PMID: 25919227 PMCID: PMC4415091 DOI: 10.1038/ncomms7342] [Citation(s) in RCA: 620] [Impact Index Per Article: 68.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 01/20/2015] [Indexed: 12/12/2022] Open
Abstract
Rates of colon cancer are much higher in African Americans (65:100,000) than in rural South Africans (<5:100,000). The higher rates are associated with higher animal protein and fat, and lower fibre consumption, higher colonic secondary bile acids, lower colonic short-chain fatty acid quantities and higher mucosal proliferative biomarkers of cancer risk in otherwise healthy middle-aged volunteers. Here we investigate further the role of fat and fibre in this association. We performed 2-week food exchanges in subjects from the same populations, where African Americans were fed a high-fibre, low-fat African-style diet and rural Africans a high-fat, low-fibre western-style diet, under close supervision. In comparison with their usual diets, the food changes resulted in remarkable reciprocal changes in mucosal biomarkers of cancer risk and in aspects of the microbiota and metabolome known to affect cancer risk, best illustrated by increased saccharolytic fermentation and butyrogenesis, and suppressed secondary bile acid synthesis in the African Americans.
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Affiliation(s)
- Stephen J D O'Keefe
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Jia V Li
- Department of Surgery and Cancer and Centre for Digestive and Gut Health, Institution of Global Health Innovation, Imperial College, London SW7 2AZ, UK
| | - Leo Lahti
- 1] Laboratory of Microbiology, Wageningen University, Wageningen 6703 HB, The Netherlands [2] Department of Veterinary Bioscience, University of Helsinki, Helsinki, Finland
| | - Junhai Ou
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Franck Carbonero
- University of Illinois at Urbana-Champaign, Champaign, Illinois 61801, USA
| | - Khaled Mohammed
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Joram M Posma
- Department of Surgery and Cancer and Centre for Digestive and Gut Health, Institution of Global Health Innovation, Imperial College, London SW7 2AZ, UK
| | - James Kinross
- Department of Surgery and Cancer and Centre for Digestive and Gut Health, Institution of Global Health Innovation, Imperial College, London SW7 2AZ, UK
| | - Elaine Wahl
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Elizabeth Ruder
- Division of Sports Medicine and Nutrition, School of Health and Rehabilitation Sciences, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Kishore Vipperla
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | | | | | - Sebastian Tims
- Laboratory of Microbiology, Wageningen University, Wageningen 6703 HB, The Netherlands
| | - Philippe G B Puylaert
- Laboratory of Microbiology, Wageningen University, Wageningen 6703 HB, The Netherlands
| | - James DeLany
- Division of Endocrinology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Alyssa Krasinskas
- Division of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Ann C Benefiel
- University of Illinois at Urbana-Champaign, Champaign, Illinois 61801, USA
| | - Hatem O Kaseb
- Division of Gastroenterology, Hepatology and Nutrition, Department of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
| | - Keith Newton
- University of KwaZulu-Natal, Durban, South Africa
| | - Jeremy K Nicholson
- Department of Surgery and Cancer and Centre for Digestive and Gut Health, Institution of Global Health Innovation, Imperial College, London SW7 2AZ, UK
| | - Willem M de Vos
- 1] Laboratory of Microbiology, Wageningen University, Wageningen 6703 HB, The Netherlands [2] Department of Veterinary Bioscience, University of Helsinki, Helsinki, Finland [3] RPU Immunolbiology, Department of Bacteriology and Immunology, University of Helsinki, Helsinki 00014, Finland
| | - H Rex Gaskins
- University of Illinois at Urbana-Champaign, Champaign, Illinois 61801, USA
| | - Erwin G Zoetendal
- Laboratory of Microbiology, Wageningen University, Wageningen 6703 HB, The Netherlands
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557
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Evans CA, Rosser R, Waby JS, Noirel J, Lai D, Wright PC, Williams EA, Riley SA, Bury JP, Corfe BM. Reduced keratin expression in colorectal neoplasia and associated fields is reversible by diet and resection. BMJ Open Gastroenterol 2015; 2:e000022. [PMID: 26462274 PMCID: PMC4599164 DOI: 10.1136/bmjgast-2014-000022] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/19/2014] [Accepted: 12/22/2014] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Patients with adenomatous colonic polyps are at increased risk of developing further polyps suggesting field-wide alterations in cancer predisposition. The current study aimed to identify molecular alterations in the normal mucosa in the proximity of adenomatous polyps and to assess the modulating effect of butyrate, a chemopreventive compound produced by fermentation of dietary residues. METHODS A cross-sectional study was undertaken in patients with adenomatous polyps: biopsy samples were taken from the adenoma, and from macroscopically normal mucosa on the contralateral wall to the adenoma and from the mid-sigmoid colon. In normal subjects biopsies were taken from the mid-sigmoid colon. Biopsies were frozen for proteomic analysis or formalin-fixed for immunohistochemistry. Proteomic analysis was undertaken using iTRAQ workflows followed by bioinformatics analyses. A second dietary fibre intervention study arm used the same endpoints and sampling strategy at the beginning and end of a high-fibre intervention. RESULTS Key findings were that keratins 8, 18 and 19 were reduced in expression level with progressive proximity to the lesion. Lesional tissue exhibited multiple K8 immunoreactive bands and overall reduced levels of keratin. Biopsies from normal subjects with low faecal butyrate also showed depressed keratin expression. Resection of the lesion and elevation of dietary fibre intake both appeared to restore keratin expression level. CONCLUSION Changes in keratin expression associate with progression towards neoplasia, but remain modifiable risk factors. Dietary strategies may improve secondary chemoprevention. TRIAL REGISTRATION NUMBER ISRCTN90852168.
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Affiliation(s)
- Caroline A Evans
- Department of Chemical and Biological Engineering , ChELSI Institute, University of Sheffield , Sheffield , UK
| | - Ria Rosser
- Molecular Gastroenterology Research Group, Department of Oncology , University of Sheffield, The Medical School , Sheffield , UK
| | - Jennifer S Waby
- Molecular Gastroenterology Research Group, Department of Oncology , University of Sheffield, The Medical School , Sheffield , UK ; Department of Biological Sciences , The University of Hull , Hull , UK
| | - Josselin Noirel
- Department of Chemical and Biological Engineering , ChELSI Institute, University of Sheffield , Sheffield , UK ; Conservatoire National des Arts et Mmétiers , Paris , France
| | - Daphne Lai
- Molecular Gastroenterology Research Group, Department of Oncology , University of Sheffield, The Medical School , Sheffield , UK ; Department of Geography , University of Sheffield , Sheffield , UK
| | - Phillip C Wright
- Department of Chemical and Biological Engineering , ChELSI Institute, University of Sheffield , Sheffield , UK
| | - Elizabeth A Williams
- Human Nutrition Unit, Department of Oncology , University of Sheffield, The Medical School , Sheffield , UK
| | - Stuart A Riley
- Department of Gastroenterology , Northern General Hospital , Sheffield , UK
| | - Jonathan P Bury
- Department of Pathology , Royal Hallamshire Hospital , Sheffield , UK
| | - Bernard M Corfe
- Molecular Gastroenterology Research Group, Department of Oncology , University of Sheffield, The Medical School , Sheffield , UK ; Insigneo Institute for in Silico Medicine, The University of Sheffield , Sheffield , UK
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558
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Kelly CJ, Zheng L, Campbell EL, Saeedi B, Scholz CC, Bayless AJ, Wilson KE, Glover LE, Kominsky DJ, Magnuson A, Weir TL, Ehrentraut SF, Pickel C, Kuhn KA, Lanis JM, Nguyen V, Taylor CT, Colgan SP. Crosstalk between Microbiota-Derived Short-Chain Fatty Acids and Intestinal Epithelial HIF Augments Tissue Barrier Function. Cell Host Microbe 2015; 17:662-71. [PMID: 25865369 DOI: 10.1016/j.chom.2015.03.005] [Citation(s) in RCA: 1070] [Impact Index Per Article: 118.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Revised: 11/21/2014] [Accepted: 01/22/2015] [Indexed: 02/07/2023]
Abstract
Interactions between the microbiota and distal gut are fundamental determinants of human health. Such interactions are concentrated at the colonic mucosa and provide energy for the host epithelium through the production of the short-chain fatty acid butyrate. We sought to determine the role of epithelial butyrate metabolism in establishing the austere oxygenation profile of the distal gut. Bacteria-derived butyrate affects epithelial O2 consumption and results in stabilization of hypoxia-inducible factor (HIF), a transcription factor coordinating barrier protection. Antibiotic-mediated depletion of the microbiota reduces colonic butyrate and HIF expression, both of which are restored by butyrate supplementation. Additionally, germ-free mice exhibit diminished retention of O2-sensitive dyes and decreased stabilized HIF. Furthermore, the influences of butyrate are lost in cells lacking HIF, thus linking butyrate metabolism to stabilized HIF and barrier function. This work highlights a mechanism where host-microbe interactions augment barrier function in the distal gut.
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Affiliation(s)
- Caleb J Kelly
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Leon Zheng
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Eric L Campbell
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Bejan Saeedi
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Carsten C Scholz
- School of Medicine and Medical Science, Conway Institute, University College Dublin, Ireland
| | - Amanda J Bayless
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Kelly E Wilson
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Louise E Glover
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Douglas J Kominsky
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Anesthesiology, University of Colorado, Aurora, CO 80045, USA
| | - Aaron Magnuson
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, CO 80523, USA
| | - Tiffany L Weir
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, CO 80523, USA
| | - Stefan F Ehrentraut
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA; Department of Anesthesiology, University of Bonn, Bonn 53113, Germany
| | - Christina Pickel
- School of Medicine and Medical Science, Conway Institute, University College Dublin, Ireland
| | - Kristine A Kuhn
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Jordi M Lanis
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Vu Nguyen
- Department of Medicine, University of Colorado, Aurora, CO 80045, USA
| | - Cormac T Taylor
- School of Medicine and Medical Science, Conway Institute, University College Dublin, Ireland
| | - Sean P Colgan
- Mucosal Inflammation Program, University of Colorado, Aurora, CO 80045, USA; Department of Medicine, University of Colorado, Aurora, CO 80045, USA.
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559
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Bultman SJ, Jobin C. Microbial-derived butyrate: an oncometabolite or tumor-suppressive metabolite? Cell Host Microbe 2015; 16:143-145. [PMID: 25121740 DOI: 10.1016/j.chom.2014.07.011] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Dietary factors, microbial composition, and metabolism are intimately intertwined into a complex network whose activities influence important intestinal functions. In a recent issue of Cell, Belcheva et al. (2014) show that microbial-derived butyrate promotes proliferation of cancer-initiated intestinal epithelial cells, suggesting that it can act as an oncometabolite.
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Affiliation(s)
- Scott J Bultman
- Department of Genetics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27516, USA.
| | - Christian Jobin
- Department of Infectious Diseases & Pathology, Department of Medicine, University of Florida, Gainesville, FL 32611, USA.
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560
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Abstract
Increasingly, the gut microbiome is implicated in the etiology of cancer, not only as an infectious agent but also by altering exposure to dietary compounds that influence disease risk. Whereas the composition and metabolism of the gut microbiome is influenced by diet, the gut microbiome can also modify dietary exposures in ways that are beneficial or detrimental to the human host. The colonic bacteria metabolize macronutrients, either as specialists or in consortia of bacteria, in a variety of diverse metabolic pathways. Microbial metabolites of diet can also be epigenetic activators of gene expression that may influence cancer risk in humans. Epigenetics involves heritable changes in gene expression via post-translational and post-transcriptional modifications. Microbial metabolites can influence epigenetics by altering the pool of compounds used for modification or by directly inhibiting enzymes involved in epigenetic pathways. Colonic epithelium is immediately exposed to these metabolites, although some metabolites are also found in systemic circulation. In this review, we discuss the role of the gut microbiome in dietary metabolism and how microbial metabolites may influence gene expression linked to colon cancer risk.
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561
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Bardhan K, Paschall AV, Yang D, Chen MR, Simon PS, Bhutia YD, Martin PM, Thangaraju M, Browning DD, Ganapathy V, Heaton CM, Gu K, Lee JR, Liu K. IFNγ Induces DNA Methylation-Silenced GPR109A Expression via pSTAT1/p300 and H3K18 Acetylation in Colon Cancer. Cancer Immunol Res 2015; 3:795-805. [PMID: 25735954 DOI: 10.1158/2326-6066.cir-14-0164] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 02/23/2015] [Indexed: 01/08/2023]
Abstract
Short-chain fatty acids, metabolites produced by colonic microbiota from fermentation of dietary fiber, act as anti-inflammatory agents in the intestinal tract to suppress proinflammatory diseases. GPR109A is the receptor for short-chain fatty acids. The functions of GPR109A have been the subject of extensive studies; however, the molecular mechanisms underlying GPR109A expression is largely unknown. We show that GPR109A is highly expressed in normal human colon tissues, but is silenced in human colon carcinoma cells. The GPR109A promoter DNA is methylated in human colon carcinoma. Strikingly, we observed that IFNγ, a cytokine secreted by activated T cells, activates GPR109A transcription without altering its promoter DNA methylation. Colon carcinoma grows significantly faster in IFNγ-deficient mice than in wild-type mice in an orthotopic colon cancer mouse model. A positive correlation was observed between GPR109A protein level and tumor-infiltrating T cells in human colon carcinoma specimens, and IFNγ expression level is higher in human colon carcinoma tissues than in normal colon tissues. We further demonstrated that IFNγ rapidly activates pSTAT1 that binds to the promoter of p300 to activate its transcription. p300 then binds to the GPR109A promoter to induce H3K18 hyperacetylation, resulting in chromatin remodeling in the methylated GPR109A promoter. The IFNγ-activated pSTAT1 then directly binds to the methylated but hyperacetylated GPR109 promoter to activate its transcription. Overall, our data indicate that GPR109A acts as a tumor suppressor in colon cancer, and the host immune system might use IFNγ to counteract DNA methylation-mediated GPR109A silencing as a mechanism to suppress tumor development.
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Affiliation(s)
- Kankana Bardhan
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia
| | - Amy V Paschall
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia. Cancer Center, Georgia Regents University, Augusta, Georgia. Charlie Norwood VA Medical Center, Augusta, Georgia
| | - Dafeng Yang
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia. Charlie Norwood VA Medical Center, Augusta, Georgia
| | - May R Chen
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia
| | - Priscilla S Simon
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia. Cancer Center, Georgia Regents University, Augusta, Georgia. Charlie Norwood VA Medical Center, Augusta, Georgia
| | - Yangzom D Bhutia
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia
| | - Pamela M Martin
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia
| | - Muthusamy Thangaraju
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia. Cancer Center, Georgia Regents University, Augusta, Georgia
| | - Darren D Browning
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia. Cancer Center, Georgia Regents University, Augusta, Georgia
| | - Vadivel Ganapathy
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia. Cancer Center, Georgia Regents University, Augusta, Georgia
| | - Christopher M Heaton
- Department of Pathology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia
| | - Keni Gu
- University Hospital, Augusta, Georgia
| | - Jeffrey R Lee
- Charlie Norwood VA Medical Center, Augusta, Georgia. Department of Pathology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia
| | - Kebin Liu
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Georgia Regents University, Augusta, Georgia. Cancer Center, Georgia Regents University, Augusta, Georgia. Charlie Norwood VA Medical Center, Augusta, Georgia.
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562
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Borlak J, Singh P, Gazzana G. Proteome mapping of epidermal growth factor induced hepatocellular carcinomas identifies novel cell metabolism targets and mitogen activated protein kinase signalling events. BMC Genomics 2015; 16:124. [PMID: 25872475 PMCID: PMC4357185 DOI: 10.1186/s12864-015-1312-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 02/03/2015] [Indexed: 02/06/2023] Open
Abstract
Background Hepatocellular carcinoma (HCC) is on the rise and the sixth most common cancer worldwide. To combat HCC effectively research is directed towards its early detection and the development of targeted therapies. Given the fact that epidermal growth factor (EGF) is an important mitogen for hepatocytes we searched for disease regulated proteins to improve an understanding of the molecular pathogenesis of EGF induced HCC. Disease regulated proteins were studied by 2DE MALDI-TOF/TOF and a transcriptomic approach, by immunohistochemistry and advanced bioinformatics. Results Mapping of EGF induced liver cancer in a transgenic mouse model identified n = 96 (p < 0.05) significantly regulated proteins of which n = 54 were tumour-specific. To unravel molecular circuits linked to aberrant EGFR signalling diverse computational approaches were employed and this defined n = 7 key nodes using n = 82 disease regulated proteins for network construction. STRING analysis revealed protein-protein interactions of > 70% disease regulated proteins with individual proteins being validated by immunohistochemistry. The disease regulated network proteins were mapped to distinct pathways and bioinformatics provided novel insight into molecular circuits associated with significant changes in either glycolysis and gluconeogenesis, argine and proline metabolism, protein processing in endoplasmic reticulum, Hif- and MAPK signalling, lipoprotein metabolism, platelet activation and hemostatic control as a result of aberrant EGF signalling. The biological significance of the findings was corroborated with gene expression data derived from tumour tissues to evntually define a rationale by which tumours embark on intriguing changes in metabolism that is of utility for an understanding of tumour growth. Moreover, among the EGF tumour specific proteins n = 11 were likewise uniquely expressed in human HCC and for n = 49 proteins regulation in human HCC was confirmed using the publically available Human Protein Atlas depository, therefore demonstrating clinical significance. Conclusion Novel insight into the molecular pathogenesis of EGF induced liver cancer was obtained and among the 37 newly identified proteins several are likely candidates for the development of molecularly targeted therapies and include the nucleoside diphosphate kinase A, bifunctional ATP-dependent dihydroyacetone kinase and phosphatidylethanolamine-binding protein1, the latter being an inhibitor of the Raf-1 kinase. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-1312-z) contains supplementary material, which is available to authorized users.
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563
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Abstract
The molecular signatures of epigenetic regulation and chromatin architectures are fundamental to genetically determined biological processes. Covalent and post-translational chemical modification of the chromatin template can sensitize the genome to changing environmental conditions to establish diverse functional states. Recent interest and research focus surrounds the direct connections between metabolism and chromatin dynamics, which now represents an important conceptual challenge to explain many aspects of metabolic dysfunction. Several components of the epigenetic machinery require intermediates of cellular metabolism for enzymatic function. Furthermore, changes to intracellular metabolism can alter the expression of specific histone methyltransferases and acetyltransferases conferring widespread variations in epigenetic modification patterns. Specific epigenetic influences of dietary glucose and lipid consumption, as well as undernutrition, are observed across numerous organs and pathways associated with metabolism. Studies have started to define the chromatin-dependent mechanisms underlying persistent and pathophysiological changes induced by altered metabolism. Importantly, numerous recent studies demonstrate that gene regulation underlying phenotypic determinants of adult metabolic health is influenced by maternal and early postnatal diet. These emerging concepts open new perspectives to combat the rising global epidemic of metabolic disorders.
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Affiliation(s)
- Samuel T. Keating
- From the Epigenetics in Human Health and Disease Laboratory (S.T.K., A.E.-O.) and Epigenomics Profiling Facility (S.T.K., A.E.-O.), Baker IDI Heart & Diabetes Institute, The Alfred Medical Research and Education Precinct, Melbourne, Victoria, Australia; Department of Pathology, The University of Melbourne, Victoria, Australia (A.E.-O.); and Central Clinical School, Department of Medicine, Monash University, Melbourne, Victoria, Australia (A.E.-O.)
| | - Assam El-Osta
- From the Epigenetics in Human Health and Disease Laboratory (S.T.K., A.E.-O.) and Epigenomics Profiling Facility (S.T.K., A.E.-O.), Baker IDI Heart & Diabetes Institute, The Alfred Medical Research and Education Precinct, Melbourne, Victoria, Australia; Department of Pathology, The University of Melbourne, Victoria, Australia (A.E.-O.); and Central Clinical School, Department of Medicine, Monash University, Melbourne, Victoria, Australia (A.E.-O.)
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564
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The multifactorial interplay of diet, the microbiome and appetite control: current knowledge and future challenges. Proc Nutr Soc 2015; 74:235-44. [DOI: 10.1017/s0029665114001670] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The recent availability of high-throughput nucleic acid sequencing technologies has rapidly advanced approaches to analysing the role of the gut microbiome in governance of human health, including gut health, and also metabolic, cardiovascular and mental health,inter alia. Recent scientific studies suggest that energy intake (EI) perturbations at the population level cannot account for the current obesity epidemic, and significant work is investigating the potential role of the microbiome, and in particular its metabolic products, notably SCFA, predominantly acetate, propionate and butyrate, the last of which is an energy source for the epithelium of the large intestine. The energy yield from dietary residues may be a significant factor influencing energy balance. This review posits that the contribution towards EI is governed by EI diet composition (not just fibre), the composition of the microbiome and by the levels of physical activity. Furthermore, we hypothesise that these factors do not exist in a steady state, but rather are dynamic, with both short- and medium-term effects on appetite regulation. We suggest that the existing modelling strategies for bacterial dynamics, specifically for growth in chemostat culture, are of utility in understanding the dynamic interplay of diet, activity and microbiomic organisation. Such approaches may be informative in optimising the application of dietary and microbial therapy to promote health.
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565
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Belcheva A, Irrazabal T, Martin A. Gut microbial metabolism and colon cancer: Can manipulations of the microbiota be useful in the management of gastrointestinal health? Bioessays 2015; 37:403-12. [DOI: 10.1002/bies.201400204] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
| | | | - Alberto Martin
- Department of Immunology; University of Toronto; ON Canada
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566
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Fan J, Krautkramer KA, Feldman JL, Denu JM. Metabolic regulation of histone post-translational modifications. ACS Chem Biol 2015; 10:95-108. [PMID: 25562692 DOI: 10.1021/cb500846u] [Citation(s) in RCA: 226] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Histone post-translational modifications regulate transcription and other DNA-templated functions. This process is dynamically regulated by specific modifying enzymes whose activities require metabolites that either serve as cosubstrates or act as activators/inhibitors. Therefore, metabolism can influence histone modification by changing local concentrations of key metabolites. Physiologically, the epigenetic response to metabolism is important for nutrient sensing and environment adaption. In pathologic states, the connection between metabolism and histone modification mediates epigenetic abnormality in complex disease. In this review, we summarize recent studies of the molecular mechanisms involved in metabolic regulation of histone modifications and discuss their biological significance.
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Affiliation(s)
- Jing Fan
- Department of Biomolecular Chemistry and the Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
| | - Kimberly A. Krautkramer
- Department of Biomolecular Chemistry and the Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
| | - Jessica L. Feldman
- Department of Biomolecular Chemistry and the Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
| | - John M. Denu
- Department of Biomolecular Chemistry and the Wisconsin Institute for Discovery, University of Wisconsin-Madison, Madison, Wisconsin 53715, United States
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567
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Jiang Y, Zhang WH, Gao F, Zhou GH. Micro-encapsulated sodium butyrate attenuates oxidative stress induced by corticosterone exposure and modulates apoptosis in intestinal mucosa of broiler chickens. ANIMAL PRODUCTION SCIENCE 2015. [DOI: 10.1071/an13348] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The aim of the present study was to investigate the effects of micro-encapsulated sodium butyrate (MSB) on oxidative stress and apoptosis induced by dietary corticosterone (CORT) in the intestinal mucosa of broiler chickens. In total, 120 1-day-old male broilers (Arbor Acres) were randomly allocated to two treatment groups and were fed on a control diet (without MSB) or 0.4 g MSB/kg diet. Each treatment had six replicates with five chickens each. From 7 days of age onward, 50% of the chickens in each dietary treatment were subjected to CORT treatment (30 mg/kg of diet). The experimental period was 21 days. The results showed that CORT administration decreased (P < 0.001) feed intake and bodyweight gain and increased (P < 0.001) feed to gain ratio (F : G) of broiler chickens. The dietary MSB supplementation decreased (P < 0.01) F : G and there was an interaction between MSB and CORT on F : G (P < 0.05). Moreover, the activities of superoxide dismutase, glutathione peroxidase and catalase in intestinal mucosa were decreased (P < 0.01 or P < 0.001), and the concentrations of malondialdehyde in the intestinal mucosa were elevated (P < 0.01) by CORT administration. In contrast, treatment of MSB increased (P < 0.01) the catalase activities in duodenal and jejunal mucosa and decreased (P < 0.01) the malondialdehyde concentrations in duodenal mucosa. Higher apoptosis index and lower mRNA expressions of bcl-2 in intestinal epithelial cells were induced (P < 0.05) by CORT treatment. However, MSB decreased (P < 0.05) the apoptosis index and increased the bcl-2 expression. These results suggest that dietary MSB can partially attenuate oxidative stress induced by CORT treatment and inhibit apoptosis of intestinal epithelial cells in broiler chickens.
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568
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Abstract
Advanced mucosal healing (MH) after intestinal mucosal inflammation coincides with sustained clinical remission and reduced rates of hospitalization and surgical resection, explaining why MH is increasingly considered as a full therapeutic goal and as an endpoint for clinical trials. Intestinal MH is a complex phenomenon viewed as a succession of steps necessary to restore tissue structure and function. These steps include epithelial cell migration and proliferation, cell differentiation, restoration of epithelial barrier functions, and modulation of cell apoptosis. Few clinical studies have evaluated the needs for specific macronutrients and micronutrients and their effects on intestinal MH, most data having been obtained from animal and cell studies. These data suggest that supplementation with specific amino acids including arginine, glutamine, glutamate, threonine, methionine, serine, proline, and the amino acid-derived compounds, polyamines can favorably influence MH. Short-chain fatty acids, which are produced by the microbiota from undigested polysaccharides and protein-derived amino acids, also exert beneficial effects on the process of intestinal MH in experimental models. Regarding supplementation with lipids, although the effects of ω-3 and ω-6 fatty acids remain controversial, endogenous prostaglandin synthesis seems to be necessary for MH. Finally, among micronutrients, several vitamin and mineral deficiencies with different frequencies have been observed in patients with inflammatory bowel diseases and supplementation with some of them (vitamin A, vitamin D3, vitamin C, and zinc) are presumed to favor MH. Future work, including clinical studies, should evaluate the efficiency of supplementation with combination of dietary compounds as adjuvant nutritional intervention for MH of the inflamed intestinal mucosa.
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569
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Xiang S, Fang J, Wang S, Deng B, Zhu L. MicroRNA‑135b regulates the stability of PTEN and promotes glycolysis by targeting USP13 in human colorectal cancers. Oncol Rep 2014; 33:1342-8. [PMID: 25571954 DOI: 10.3892/or.2014.3694] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 11/30/2014] [Indexed: 11/05/2022] Open
Abstract
Dysregulation of microRNAs has been reported to be involved in the progression of human colorectal cancers (CRCs). Loss of the adenomatous polyposis coli (APC) gene is a common initiating event in CRCs. PTEN inactivation by mutation or allelic loss also occurs in CRCs. miR‑135b was reported to be upregulated in CRCs and its overexpression was due to APC/β‑catenin and PTEN/PI3K pathway deregulation. APC was proven to be a target of miR‑135b and forms a feedback loop with miR‑135b. In the present study, we found that ubiquitin‑specific peptidase 13 (USP13) was a target of miR‑135b. miR‑135b downregulated the expression of USP13, and reduced the stability of PTEN. miR‑135b promoted cell proliferation and glycolysis that could be reversed by the overexpression of USP13 or PTEN. Moreover, knockdown of USP13 upregulated the levels of endogenous miR‑135b, but not those in CRC cells with PTEN mutation. The results showed positive feedback loops between miR‑135b and PTEN inactivation in CRCs.
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Affiliation(s)
- Shijun Xiang
- Department of General Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Jiaqing Fang
- Department of Gastroenterology, Changzheng Hospital, Second Military Medical University, Shanghai 200003, P.R. China
| | - Shuyun Wang
- Department of General Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Biao Deng
- Department of General Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
| | - Lin Zhu
- Department of General Surgery, Shanghai First People's Hospital, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
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570
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Zhao F, Klimecki WT. Culture conditions profoundly impact phenotype in BEAS-2B, a human pulmonary epithelial model. J Appl Toxicol 2014; 35:945-51. [PMID: 25524072 DOI: 10.1002/jat.3094] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Revised: 10/13/2014] [Accepted: 10/27/2014] [Indexed: 12/20/2022]
Abstract
BEAS-2B, an immortalized, human lung epithelial cell line, has been used to model pulmonary epithelial function for over 30 years. The BEAS-2B phenotype can be modulated by culture conditions that include the presence or absence of fetal bovine serum (FBS). The popularity of BEAS-2B as a model of arsenic toxicology, and the common use of BEAS-2B cultured both with and without FBS, led us to investigate the impact of FBS on BEAS-2B in the context of arsenic toxicology. Comparison of genome-wide gene expression in BEAS-2B cultured with or without FBS revealed altered expression in several biological pathways, including those related to carcinogenesis and energy metabolism. Real-time measurements of oxygen consumption and glycolysis in BEAS-2B demonstrated that FBS culture conditions were associated with a 1.4-fold increase in total glycolytic capacity, a 1.9-fold increase in basal respiration, a 2.0-fold increase in oxygen consumed for ATP production and a 2.8-fold increase in maximal respiration, compared with BEAS-2B cultured without FBS. Comparisons of the transcriptome changes in BEAS-2B resulting from FBS exposure to the transcriptome changes resulting from exposure to 1 μM sodium arsenite revealed that mRNA levels of 43% of the arsenite-modulated genes were also modulated by FBS. Cytotoxicity studies revealed that BEAS-2B cells exposed to 5% FBS for 8 weeks were almost 5 times more sensitive to arsenite cytotoxicity than non-FBS-exposed BEAS-2B cells. Phenotype changes induced in BEAS-2B by FBS suggest that culture conditions should be carefully considered when using BEAS-2B as an experimental model of arsenic toxicity.
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Affiliation(s)
- Fei Zhao
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, Tucson, Arizona, 85724, USA
| | - Walter T Klimecki
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, Tucson, Arizona, 85724, USA
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571
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Sebastián C, Mostoslavsky R. Untangling the fiber yarn: butyrate feeds Warburg to suppress colorectal cancer. Cancer Discov 2014; 4:1368-70. [PMID: 25477104 PMCID: PMC4258833 DOI: 10.1158/2159-8290.cd-14-1231] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Dietary composition has an important role in shaping the gut microbiota. In turn, changes in the diet directly impinge on bacterial metabolites present in the intestinal lumen. Whether such metabolites play a role in intestinal cancer has been a topic of hot debate. In this issue of Cancer Discovery, Donohoe and colleagues show that dietary fiber protects against colorectal carcinoma in a microbiota-dependent manner. Furthermore, fiber-derived butyrate acts as a histone deacetylase inhibitor, inhibiting cell proliferation and inducing apoptosis in colorectal cancer cells experiencing the Warburg effect.
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Affiliation(s)
- Carlos Sebastián
- The Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, Massachusetts
| | - Raul Mostoslavsky
- The Massachusetts General Hospital Cancer Center, Harvard Medical School, Boston, Massachusetts.
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572
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Carrer A, Wellen KE. Metabolism and epigenetics: a link cancer cells exploit. Curr Opin Biotechnol 2014; 34:23-9. [PMID: 25461508 DOI: 10.1016/j.copbio.2014.11.012] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 11/10/2014] [Accepted: 11/11/2014] [Indexed: 12/24/2022]
Abstract
Both cellular nutrient metabolism and chromatin organization are remodeled in cancer cells, and these alterations play key roles in tumor development and growth. Many chromatin modifying-enzymes utilize metabolic intermediates as cofactors or substrates, and recent studies have demonstrated that the epigenome is sensitive to cellular metabolism. The contribution of metabolic alterations to epigenetic deregulation in cancer cells is just beginning to emerge, as are the roles of the metabolism-epigenetics link in tumorigenesis. Here we review the roles of acetyl-CoA and S-adenosylmethionine (SAM), donor substrates for acetylation and methylation reactions, respectively, in regulating chromatin modifications in response to nutrient metabolism. We further discuss how oncogenic signaling, cell metabolism, and histone modifications are interconnected and how their relationship might impact tumor growth.
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Affiliation(s)
- Alessandro Carrer
- Department of Cancer Biology, Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Kathryn E Wellen
- Department of Cancer Biology, Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
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573
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Belcheva A, Martin A. Gut microbiota and colon cancer: the carbohydrate link. Mol Cell Oncol 2014; 2:e969630. [PMID: 27308387 PMCID: PMC4905239 DOI: 10.4161/23723548.2014.969630] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Revised: 08/28/2014] [Accepted: 08/28/2014] [Indexed: 01/10/2023]
Abstract
Understanding the complex pathophysiology of colorectal cancer and the interaction between host genetics, the gut microbiome, and diet has attracted significant attention in the last few years. The discovery that gut microbial metabolites may dictate the course of colorectal cancer progression supports the development of microbial-targeted strategies.
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Affiliation(s)
| | - Alberto Martin
- Department of Immunology; University of Toronto ; Toronto, ON Canada
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574
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Abstract
The gut microbiota has emerged as an integral factor that impacts host metabolism and has been suggested to play a vital role in metabolic diseases such as obesity, insulin resistance, type 2 diabetes, and cardiovascular disease. In humans, cross-sectional studies have identified microbiota profiles associated with metabolic diseases, whereas causation mainly has been demonstrated in animal models. Recent studies involving microbiota-based interventions in humans, or transfer of disease-associated microbiota into germ-free mice, underscore that an altered microbiota may directly modulate host metabolism in humans. However, it will be essential to determine whether an altered gut microbiota precedes development of insulin resistance and diabetes and to identify the underlying molecular mechanisms. Increased mechanistic insights of how the microbiota modulates metabolic disease in humans may pave the way for identification of innovative microbiota-based diagnostics and/or therapeutics.
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575
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Belcheva A, Irrazabal T, Robertson SJ, Streutker C, Maughan H, Rubino S, Moriyama EH, Copeland JK, Surendra A, Kumar S, Green B, Geddes K, Pezo RC, Navarre WW, Milosevic M, Wilson BC, Girardin SE, Wolever TMS, Edelmann W, Guttman DS, Philpott DJ, Martin A. Gut microbial metabolism drives transformation of MSH2-deficient colon epithelial cells. Cell 2014; 158:288-299. [PMID: 25036629 DOI: 10.1016/j.cell.2014.04.051] [Citation(s) in RCA: 334] [Impact Index Per Article: 33.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Revised: 03/24/2014] [Accepted: 04/28/2014] [Indexed: 02/08/2023]
Abstract
The etiology of colorectal cancer (CRC) has been linked to deficiencies in mismatch repair and adenomatous polyposis coli (APC) proteins, diet, inflammatory processes, and gut microbiota. However, the mechanism through which the microbiota synergizes with these etiologic factors to promote CRC is not clear. We report that altering the microbiota composition reduces CRC in APC(Min/+)MSH2(-/-) mice, and that a diet reduced in carbohydrates phenocopies this effect. Gut microbes did not induce CRC in these mice through an inflammatory response or the production of DNA mutagens but rather by providing carbohydrate-derived metabolites such as butyrate that fuel hyperproliferation of MSH2(-/-) colon epithelial cells. Further, we provide evidence that the mismatch repair pathway has a role in regulating β-catenin activity and modulating the differentiation of transit-amplifying cells in the colon. These data thereby provide an explanation for the interaction between microbiota, diet, and mismatch repair deficiency in CRC induction. PAPERCLIP:
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Affiliation(s)
- Antoaneta Belcheva
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Thergiory Irrazabal
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Susan J Robertson
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Catherine Streutker
- Department of Laboratory Medicine, St. Michael's Hospital, Toronto, ON M5B 1W8, Canada
| | | | - Stephen Rubino
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Eduardo H Moriyama
- Princess Margaret Cancer Centre/University Health Network, Toronto, ON M5G 1L7, Canada
| | - Julia K Copeland
- Centre for the Analysis of Genome Evolution & Function, University of Toronto, Toronto, ON M5S 3B2, Canada
| | - Anu Surendra
- Centre for the Analysis of Genome Evolution & Function, University of Toronto, Toronto, ON M5S 3B2, Canada
| | - Sachin Kumar
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Blerta Green
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Kaoru Geddes
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Rossanna C Pezo
- Department of Medical Oncology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - William W Navarre
- Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Michael Milosevic
- Department of Radiation Oncology, Princess Margaret Hospital, Toronto, ON M5G 2M9, Canada
| | - Brian C Wilson
- Princess Margaret Cancer Centre/University Health Network, Toronto, ON M5G 1L7, Canada
| | - Stephen E Girardin
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Thomas M S Wolever
- Department of Nutritional Sciences, University of Toronto, Toronto, ON M5S 3E2, Canada
| | - Winfried Edelmann
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - David S Guttman
- Centre for the Analysis of Genome Evolution & Function, University of Toronto, Toronto, ON M5S 3B2, Canada
| | - Dana J Philpott
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Alberto Martin
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada.
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576
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Donohoe DR, Holley D, Collins LB, Montgomery SA, Whitmore AC, Hillhouse A, Curry KP, Renner SW, Greenwalt A, Ryan EP, Godfrey V, Heise MT, Threadgill DS, Han A, Swenberg JA, Threadgill DW, Bultman SJ. A gnotobiotic mouse model demonstrates that dietary fiber protects against colorectal tumorigenesis in a microbiota- and butyrate-dependent manner. Cancer Discov 2014; 4:1387-97. [PMID: 25266735 DOI: 10.1158/2159-8290.cd-14-0501] [Citation(s) in RCA: 306] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
UNLABELLED Whether dietary fiber protects against colorectal cancer is controversial because of conflicting results from human epidemiologic studies. However, these studies and mouse models of colorectal cancer have not controlled the composition of gut microbiota, which ferment fiber into short-chain fatty acids such as butyrate. Butyrate is noteworthy because it has energetic and epigenetic functions in colonocytes and tumor-suppressive properties in colorectal cancer cell lines. We used gnotobiotic mouse models colonized with wild-type or mutant strains of a butyrate-producing bacterium to demonstrate that fiber does have a potent tumor-suppressive effect but in a microbiota- and butyrate-dependent manner. Furthermore, due to the Warburg effect, butyrate was metabolized less in tumors where it accumulated and functioned as a histone deacetylase (HDAC) inhibitor to stimulate histone acetylation and affect apoptosis and cell proliferation. To support the relevance of this mechanism in human cancer, we demonstrate that butyrate and histone-acetylation levels are elevated in colorectal adenocarcinomas compared with normal colonic tissues. SIGNIFICANCE These results, which link diet and microbiota to a tumor-suppressive metabolite, provide insight into conflicting epidemiologic findings and suggest that probiotic/prebiotic strategies can modulate an endogenous HDAC inhibitor for anticancer chemoprevention without the adverse effects associated with synthetic HDAC inhibitors used in chemotherapy.
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Affiliation(s)
- Dallas R Donohoe
- Department of Genetics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina
| | - Darcy Holley
- Department of Genetics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina
| | - Leonard B Collins
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina
| | - Stephanie A Montgomery
- College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina
| | - Alan C Whitmore
- Department of Genetics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina. Carolina Vaccine Institute, University of North Carolina, Chapel Hill, North Carolina
| | - Andrew Hillhouse
- Department of Molecular and Cellular Medicine, Texas A&M University, College Station, Texas
| | - Kaitlin P Curry
- Department of Genetics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina
| | - Sarah W Renner
- Department of Genetics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina
| | - Alicia Greenwalt
- Department of Genetics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina
| | - Elizabeth P Ryan
- Department of Environmental and Radiological Health, Colorado State University, Fort Collins, Colorado
| | - Virginia Godfrey
- Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, North Carolina
| | - Mark T Heise
- Department of Genetics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina. Carolina Vaccine Institute, University of North Carolina, Chapel Hill, North Carolina
| | - Deborah S Threadgill
- Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas
| | - Anna Han
- Department of Nutrition, University of Tennessee, Knoxville, Tennessee
| | - James A Swenberg
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina
| | - David W Threadgill
- Department of Molecular and Cellular Medicine, Texas A&M University, College Station, Texas. Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas
| | - Scott J Bultman
- Department of Genetics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina.
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577
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Kaldma A, Klepinin A, Chekulayev V, Mado K, Shevchuk I, Timohhina N, Tepp K, Kandashvili M, Varikmaa M, Koit A, Planken M, Heck K, Truu L, Planken A, Valvere V, Rebane E, Kaambre T. An in situ study of bioenergetic properties of human colorectal cancer: the regulation of mitochondrial respiration and distribution of flux control among the components of ATP synthasome. Int J Biochem Cell Biol 2014; 55:171-86. [PMID: 25218857 DOI: 10.1016/j.biocel.2014.09.004] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 08/12/2014] [Accepted: 09/02/2014] [Indexed: 11/25/2022]
Abstract
The aim of this study is to characterize the function of mitochondria and main energy fluxes in human colorectal cancer (HCC) cells. We have performed quantitative analysis of cellular respiration in post-operative tissue samples collected from 42 cancer patients. Permeabilized tumor tissue in combination with high resolution respirometry was used. Our results indicate that HCC is not a pure glycolytic tumor and the oxidative phosphorylation (OXPHOS) system may be the main provider of ATP in these tumor cells. The apparent Michaelis-Menten constant (Km) for ADP and maximal respiratory rate (Vm) values were calculated for the characterization of the affinity of mitochondria for exogenous ADP: normal colon tissue displayed low affinity (Km = 260 ± 55 μM) whereas the affinity of tumor mitochondria was significantly higher (Km = 126 ± 17 μM). But concurrently the Vm value of the tumor samples was 60-80% higher than that in control tissue. The reason for this change is related to the increased number of mitochondria. Our data suggest that in both HCC and normal intestinal cells tubulin β-II isoform probably does not play a role in the regulation of permeability of the MOM for adenine nucleotides. The mitochondrial creatine kinase energy transfer system is not functional in HCC and our experiments showed that adenylate kinase reactions could play an important role in the maintenance of energy homeostasis in colorectal carcinomas instead of creatine kinase. Immunofluorescent studies showed that hexokinase 2 (HK-2) was associated with mitochondria in HCC cells, but during carcinogenesis the total activity of HK did not change. Furthermore, only minor alterations in the expression of HK-1 and HK-2 isoforms have been observed. Metabolic Control analysis showed that the distribution of the control over electron transport chain and ATP synthasome complexes seemed to be similar in both tumor and control tissues. High flux control coefficients point to the possibility that the mitochondrial respiratory chain is reorganized in some way or assembled into large supercomplexes in both tissues.
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Affiliation(s)
- Andrus Kaldma
- Laboratory of Bioenergetics, National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
| | - Aleksandr Klepinin
- Laboratory of Bioenergetics, National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
| | - Vladimir Chekulayev
- Laboratory of Bioenergetics, National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
| | - Kati Mado
- Laboratory of Bioenergetics, National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
| | - Igor Shevchuk
- Laboratory of Bioenergetics, National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
| | - Natalja Timohhina
- Laboratory of Bioenergetics, National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
| | - Kersti Tepp
- Laboratory of Bioenergetics, National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
| | | | - Minna Varikmaa
- Laboratory of Bioenergetics, National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
| | - Andre Koit
- Laboratory of Bioenergetics, National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
| | | | | | - Laura Truu
- Tallinn University of Technology, Tallinn, Estonia
| | - Anu Planken
- Cancer Research Competence Center, Tallinn, Estonia
| | | | - Egle Rebane
- Cancer Research Competence Center, Tallinn, Estonia
| | - Tuuli Kaambre
- Laboratory of Bioenergetics, National Institute of Chemical Physics and Biophysics, Tallinn, Estonia; Tallinn University, Tallinn, Estonia.
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578
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Liu X, Blouin JM, Santacruz A, Lan A, Andriamihaja M, Wilkanowicz S, Benetti PH, Tomé D, Sanz Y, Blachier F, Davila AM. High-protein diet modifies colonic microbiota and luminal environment but not colonocyte metabolism in the rat model: the increased luminal bulk connection. Am J Physiol Gastrointest Liver Physiol 2014; 307:G459-70. [PMID: 24970777 DOI: 10.1152/ajpgi.00400.2013] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
High-protein diets are used for body weight reduction, but consequences on the large intestine ecosystem are poorly known. Here, rats were fed for 15 days with either a normoproteic diet (NP, 14% protein) or a hyperproteic-hypoglucidic isocaloric diet (HP, 53% protein). Cecum and colon were recovered for analysis. Short- and branched-chain fatty acids, as well as lactate, succinate, formate, and ethanol contents, were markedly increased in the colonic luminal contents of HP rats (P < 0.05 or less) but to a lower extent in the cecal luminal content. This was associated with reduced concentrations of the Clostridium coccoides and C. leptum groups and Faecalibacterium prausnitzii in both the cecum and colon (P < 0.05 or less). In addition, the microbiota diversity was found to be higher in the cecum of HP rats but was lower in the colon compared with NP rats. In HP rats, the colonic and cecal luminal content weights were markedly higher than in NP rats (P < 0.001), resulting in similar butyrate, acetate, and propionate concentrations. Accordingly, the expression of monocarboxylate transporter 1 and sodium monocarboxylate transporter 1 (which is increased by higher butyrate concentration) as well as the colonocyte capacity for butyrate oxidation were not modified by the HP diet, whereas the amount of butyrate in feces was increased (P < 0.01). It is concluded that an increased bulk in the large intestine content following HP diet consumption allows maintenance in the luminal butyrate concentration and thus its metabolism in colonocytes despite modified microbiota composition and increased substrate availability.
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Affiliation(s)
- Xinxin Liu
- UMR914 Institut National de la Recherche Agronomique/AgroParisTech, Nutrition Physiology and Ingestive Behavior, Paris, France; and
| | - Jean-Marc Blouin
- UMR914 Institut National de la Recherche Agronomique/AgroParisTech, Nutrition Physiology and Ingestive Behavior, Paris, France; and
| | - Arlette Santacruz
- Microbial Ecophysiology and Nutrition Research Group, Institute of Agrochemistry and Food Technology, Spanish National Research Council, Valencia, Spain
| | - Annaïg Lan
- UMR914 Institut National de la Recherche Agronomique/AgroParisTech, Nutrition Physiology and Ingestive Behavior, Paris, France; and
| | - Mireille Andriamihaja
- UMR914 Institut National de la Recherche Agronomique/AgroParisTech, Nutrition Physiology and Ingestive Behavior, Paris, France; and
| | - Sabina Wilkanowicz
- Microbial Ecophysiology and Nutrition Research Group, Institute of Agrochemistry and Food Technology, Spanish National Research Council, Valencia, Spain
| | - Pierre-Henri Benetti
- UMR914 Institut National de la Recherche Agronomique/AgroParisTech, Nutrition Physiology and Ingestive Behavior, Paris, France; and
| | - Daniel Tomé
- UMR914 Institut National de la Recherche Agronomique/AgroParisTech, Nutrition Physiology and Ingestive Behavior, Paris, France; and
| | - Yolanda Sanz
- Microbial Ecophysiology and Nutrition Research Group, Institute of Agrochemistry and Food Technology, Spanish National Research Council, Valencia, Spain
| | - François Blachier
- UMR914 Institut National de la Recherche Agronomique/AgroParisTech, Nutrition Physiology and Ingestive Behavior, Paris, France; and
| | - Anne-Marie Davila
- UMR914 Institut National de la Recherche Agronomique/AgroParisTech, Nutrition Physiology and Ingestive Behavior, Paris, France; and
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579
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Lee JV, Carrer A, Shah S, Snyder NW, Wei S, Venneti S, Worth AJ, Yuan ZF, Lim HW, Liu S, Jackson E, Aiello NM, Haas NB, Rebbeck TR, Judkins A, Won KJ, Chodosh LA, Garcia BA, Stanger BZ, Feldman MD, Blair IA, Wellen KE. Akt-dependent metabolic reprogramming regulates tumor cell histone acetylation. Cell Metab 2014; 20:306-319. [PMID: 24998913 PMCID: PMC4151270 DOI: 10.1016/j.cmet.2014.06.004] [Citation(s) in RCA: 420] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Revised: 05/05/2014] [Accepted: 05/22/2014] [Indexed: 12/21/2022]
Abstract
Histone acetylation plays important roles in gene regulation, DNA replication, and the response to DNA damage, and it is frequently deregulated in tumors. We postulated that tumor cell histone acetylation levels are determined in part by changes in acetyl coenzyme A (acetyl-CoA) availability mediated by oncogenic metabolic reprogramming. Here, we demonstrate that acetyl-CoA is dynamically regulated by glucose availability in cancer cells and that the ratio of acetyl-CoA:coenzyme A within the nucleus modulates global histone acetylation levels. In vivo, expression of oncogenic Kras or Akt stimulates histone acetylation changes that precede tumor development. Furthermore, we show that Akt's effects on histone acetylation are mediated through the metabolic enzyme ATP-citrate lyase and that pAkt(Ser473) levels correlate significantly with histone acetylation marks in human gliomas and prostate tumors. The data implicate acetyl-CoA metabolism as a key determinant of histone acetylation levels in cancer cells.
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Affiliation(s)
- Joyce V Lee
- Department of Cancer Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104.,Abramson Family Cancer Research Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Alessandro Carrer
- Department of Cancer Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104.,Abramson Family Cancer Research Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Supriya Shah
- Department of Cancer Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104.,Abramson Family Cancer Research Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Nathaniel W Snyder
- Department of Pharmacology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Shuanzeng Wei
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Sriram Venneti
- Memorial Sloan Kettering Cancer Center, New York, NY, USA 10065
| | - Andrew J Worth
- Department of Pharmacology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Zuo-Fei Yuan
- Department of Biochemistry and Biophysics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Hee-Woong Lim
- Department of Genetics and Institute for Diabetes, Obesity and Metabolism, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Shichong Liu
- Department of Biochemistry and Biophysics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Ellen Jackson
- Department of Cancer Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104.,Abramson Family Cancer Research Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Nicole M Aiello
- Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104.,Abramson Family Cancer Research Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Naomi B Haas
- Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Timothy R Rebbeck
- Department of Biostatistics and Epidemiology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Alexander Judkins
- Department of Pathology and Laboratory Medicine, Keck School of Medicine of University of Southern California and Children's Hospital Los Angeles, Los Angeles, CA, USA 90027
| | - Kyoung-Jae Won
- Department of Genetics and Institute for Diabetes, Obesity and Metabolism, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Lewis A Chodosh
- Department of Cancer Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104.,Abramson Family Cancer Research Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Benjamin A Garcia
- Department of Biochemistry and Biophysics, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Ben Z Stanger
- Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104.,Abramson Family Cancer Research Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Michael D Feldman
- Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Ian A Blair
- Department of Pharmacology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
| | - Kathryn E Wellen
- Department of Cancer Biology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104.,Abramson Family Cancer Research Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA 19104
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580
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Gut microbiota-generated metabolites in animal health and disease. Nat Chem Biol 2014; 10:416-24. [PMID: 24838170 DOI: 10.1038/nchembio.1535] [Citation(s) in RCA: 464] [Impact Index Per Article: 46.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 04/22/2014] [Indexed: 12/27/2022]
Abstract
Gut microbiota is found in virtually any metazoan, from invertebrates to vertebrates. It has long been believed that gut microbiota, more specifically, the activity of the microbiome and its metabolic products, directly influence a variety of aspects in metazoan physiology. However, the exact molecular relationship among microbe-derived gut metabolites, host signaling pathways, and host physiology remains to be elucidated. Here we review recent discoveries regarding the molecular links between gut metabolites and host physiology in different invertebrate and vertebrate animal models. We describe the different roles of gut microbiome activity and their metabolites in regulating distinct host physiology and the molecular mechanisms by which gut metabolites cause physiological homeostasis via regulating specific host signaling pathways. Future studies in this direction using different animal models will provide the key concepts to understanding the evolutionarily conserved chemical dialogues between gut microbiota and metazoan cells and also human diseases associated with gut microbiota and metabolites.
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581
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Plotnikoff GA. Three measurable and modifiable enteric microbial biotransformations relevant to cancer prevention and treatment. Glob Adv Health Med 2014; 3:33-43. [PMID: 24891992 PMCID: PMC4030612 DOI: 10.7453/gahmj.2014.021] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Interdisciplinary scientific evaluation of the human microbiota has identified three enteric microbial biotransformations of particular relevance for human health and well-being, especially cancer. Two biotransformations are counterproductive; one is productive. First, selective bacteria can reverse beneficial hepatic hydroxylation to produce toxic secondary bile acids, especially deoxycholic acid. Second, numerous bacterial species can reverse hepatic detoxification-in a sense, retoxify hormones and xeonobiotics-by deglucuronidation. Third, numerous enteric bacteria can effect a very positive biotransformation through the production of butyrate, a small chain fatty acid with anti-cancer activity. Each biotransformation is addressed in sequence for its relevance in representative gastrointestinal and extra-intestinal cancers. This is not a complete review of their connection with every type of cancer. The intent is to introduce the reader to clinically relevant microbial biochemistry plus the emerging evidence that links these to both carcinogenesis and treatment. Included is the evidence base to guide counseling for potentially helpful dietary adjustments.
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Affiliation(s)
- Gregory A Plotnikoff
- Penny George Institute for Health and Healing, Abbott Northwestern Hospital, Minneapolis, Minnesota, United States
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582
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Irrazábal T, Belcheva A, Girardin S, Martin A, Philpott D. The Multifaceted Role of the Intestinal Microbiota in Colon Cancer. Mol Cell 2014; 54:309-20. [DOI: 10.1016/j.molcel.2014.03.039] [Citation(s) in RCA: 187] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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583
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Hagland HR, Søreide K. Cellular metabolism in colorectal carcinogenesis: Influence of lifestyle, gut microbiome and metabolic pathways. Cancer Lett 2014; 356:273-80. [PMID: 24614287 DOI: 10.1016/j.canlet.2014.02.026] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2013] [Revised: 02/05/2014] [Accepted: 02/28/2014] [Indexed: 02/07/2023]
Abstract
The interconnectivity between diet, gut microbiota and cell molecular responses is well known; however, only recently has technology allowed the identification of strains of microorganisms harbored in the gastrointestinal tract that may increase susceptibility to cancer. The colonic environment appears to play a role in the development of colon cancer, which is influenced by the human metabolic lifestyle and changes in the gut microbiome. Studying metabolic changes at the cellular level in cancer be useful for developing novel improved preventative measures, such as screening through metabolic breath-tests or treatment options that directly affect the metabolic pathways responsible for the carcinogenicity.
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Affiliation(s)
- Hanne R Hagland
- Department of Gastrointestinal Surgery, Stavanger University Hospital, Stavanger, Norway; Gastrointestinal Translational Research Unit, Molecular Lab, Stavanger University Hospital, Stavanger, Norway
| | - Kjetil Søreide
- Department of Gastrointestinal Surgery, Stavanger University Hospital, Stavanger, Norway; Gastrointestinal Translational Research Unit, Molecular Lab, Stavanger University Hospital, Stavanger, Norway; Department of Clinical Medicine, University of Bergen, Bergen, Norway.
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584
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Mariño G, Pietrocola F, Eisenberg T, Kong Y, Malik SA, Andryushkova A, Schroeder S, Pendl T, Harger A, Niso-Santano M, Zamzami N, Scoazec M, Durand S, Enot DP, Fernández ÁF, Martins I, Kepp O, Senovilla L, Bauvy C, Morselli E, Vacchelli E, Bennetzen M, Magnes C, Sinner F, Pieber T, López-Otín C, Maiuri MC, Codogno P, Andersen JS, Hill JA, Madeo F, Kroemer G. Regulation of autophagy by cytosolic acetyl-coenzyme A. Mol Cell 2014; 53:710-25. [PMID: 24560926 DOI: 10.1016/j.molcel.2014.01.016] [Citation(s) in RCA: 373] [Impact Index Per Article: 37.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 11/17/2013] [Accepted: 01/17/2014] [Indexed: 01/22/2023]
Abstract
Acetyl-coenzyme A (AcCoA) is a major integrator of the nutritional status at the crossroads of fat, sugar, and protein catabolism. Here we show that nutrient starvation causes rapid depletion of AcCoA. AcCoA depletion entailed the commensurate reduction in the overall acetylation of cytoplasmic proteins, as well as the induction of autophagy, a homeostatic process of self-digestion. Multiple distinct manipulations designed to increase or reduce cytosolic AcCoA led to the suppression or induction of autophagy, respectively, both in cultured human cells and in mice. Moreover, maintenance of high AcCoA levels inhibited maladaptive autophagy in a model of cardiac pressure overload. Depletion of AcCoA reduced the activity of the acetyltransferase EP300, and EP300 was required for the suppression of autophagy by high AcCoA levels. Altogether, our results indicate that cytosolic AcCoA functions as a central metabolic regulator of autophagy, thus delineating AcCoA-centered pharmacological strategies that allow for the therapeutic manipulation of autophagy.
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Affiliation(s)
- Guillermo Mariño
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France; Université Paris Descartes/Paris 5, Sorbonne Paris Cité, 75006 Paris, France
| | - Federico Pietrocola
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France; Université Paris Descartes/Paris 5, Sorbonne Paris Cité, 75006 Paris, France
| | - Tobias Eisenberg
- Institute of Molecular Biosciences, University of Graz, 8036 Graz, Austria
| | - Yongli Kong
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Shoaib Ahmad Malik
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France; Université Paris Descartes/Paris 5, Sorbonne Paris Cité, 75006 Paris, France
| | | | - Sabrina Schroeder
- Institute of Molecular Biosciences, University of Graz, 8036 Graz, Austria
| | - Tobias Pendl
- Institute of Molecular Biosciences, University of Graz, 8036 Graz, Austria
| | - Alexandra Harger
- Institute of Medical Technologies and Health Management, Joanneum Research, 8036 Graz, Austria
| | - Mireia Niso-Santano
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France; Université Paris Descartes/Paris 5, Sorbonne Paris Cité, 75006 Paris, France
| | - Naoufal Zamzami
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France; Université Paris Descartes/Paris 5, Sorbonne Paris Cité, 75006 Paris, France
| | - Marie Scoazec
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France
| | - Silvère Durand
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France
| | - David P Enot
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France
| | - Álvaro F Fernández
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Universidad de Oviedo, Oviedo 33006, Spain
| | - Isabelle Martins
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France; Université Paris Descartes/Paris 5, Sorbonne Paris Cité, 75006 Paris, France
| | - Oliver Kepp
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France; Université Paris Descartes/Paris 5, Sorbonne Paris Cité, 75006 Paris, France
| | - Laura Senovilla
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France; Université Paris Descartes/Paris 5, Sorbonne Paris Cité, 75006 Paris, France
| | - Chantal Bauvy
- Université Paris Descartes/Paris 5, Sorbonne Paris Cité, 75006 Paris, France; INSERM U845, 75014 Paris, France
| | - Eugenia Morselli
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France; Université Paris Descartes/Paris 5, Sorbonne Paris Cité, 75006 Paris, France
| | - Erika Vacchelli
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France; Université Paris Descartes/Paris 5, Sorbonne Paris Cité, 75006 Paris, France
| | - Martin Bennetzen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense, Denmark
| | - Christoph Magnes
- Institute of Medical Technologies and Health Management, Joanneum Research, 8036 Graz, Austria
| | - Frank Sinner
- Institute of Medical Technologies and Health Management, Joanneum Research, 8036 Graz, Austria
| | - Thomas Pieber
- Institute of Medical Technologies and Health Management, Joanneum Research, 8036 Graz, Austria; Medical University of Graz, Division of Endocrinology and Metabolism, Department of Internal Medicine, 8036 Graz, Austria
| | - Carlos López-Otín
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Universidad de Oviedo, Oviedo 33006, Spain
| | - Maria Chiara Maiuri
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France; Université Paris Descartes/Paris 5, Sorbonne Paris Cité, 75006 Paris, France
| | - Patrice Codogno
- Université Paris Descartes/Paris 5, Sorbonne Paris Cité, 75006 Paris, France; INSERM U845, 75014 Paris, France
| | - Jens S Andersen
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230 Odense, Denmark
| | - Joseph A Hill
- Department of Internal Medicine (Cardiology), University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Frank Madeo
- Institute of Molecular Biosciences, University of Graz, 8036 Graz, Austria.
| | - Guido Kroemer
- Equipe 11 Labelisée par la Ligue Nationale Contre le Cancer, INSERM U1138, Centre de Recherche des Cordeliers, 75006 Paris, France; Metabolomics and Molecular Cell Biology Platforms, Gustave Roussy, 94805 Villejuif, France; Université Paris Descartes/Paris 5, Sorbonne Paris Cité, 75006 Paris, France; Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, 75015 Paris, France.
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585
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Heidor R, Furtado KS, Ortega JF, de Oliveira TF, Tavares PELM, Vieira A, Miranda MLP, Purgatto E, Moreno FS. The chemopreventive activity of the histone deacetylase inhibitor tributyrin in colon carcinogenesis involves the induction of apoptosis and reduction of DNA damage. Toxicol Appl Pharmacol 2014; 276:129-35. [PMID: 24576724 DOI: 10.1016/j.taap.2014.02.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 01/31/2014] [Accepted: 02/03/2014] [Indexed: 12/11/2022]
Abstract
The chemopreventive activity of the histone deacetylase inhibitor (HDACi) tributyrin (TB), a prodrug of butyric acid (BA), was evaluated in a rat model of colon carcinogenesis. The animals were treated with TB (TB group: 200mg/100g of body weight, b.w.) or maltodextrin (MD isocaloric control group: 300 mg/100g b.w.) daily for 9 consecutive weeks. In the 3rd and 4th weeks of treatment, the rats in the TB and MD groups were given DMH (40 mg/kg b.w.) twice a week. After 9 weeks, the animals were euthanized, and the distal colon was examined. Compared with the control group (MD group), TB treatment reduced the total number of aberrant crypt foci (ACF; p<0.05) as well as the ACF with ≥4 crypts (p<0.05), which are considered more aggressive, but not inhibited the formation of DMH-induced O6-methyldeoxyguanosine DNA adducts. The TB group also showed a higher apoptotic index (p<0.05) and reduced DNA damage (p<0.05) compared with MD group. TB acted as a HDACi, as rats treated with the prodrug of BA had higher levels of histone H3K9 acetylation compared with the MD group (p<0.05). TB administration resulted in increased colonic tissue concentrations of BA (p<0.05) compared with the control animals. These results suggest that TB can be considered a promising chemopreventive agent for colon carcinogenesis because it reduced the number of ACF, including those that were more aggressive. Induction of apoptosis and reduction of DNA damage are cellular mechanisms that appear to be involved in the chemopreventive activity of TB.
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Affiliation(s)
- Renato Heidor
- Laboratory of Diet, Nutrition and Cancer, Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, Brazil; Advanced Research Center in Food Science and Nutrition (NAPAN) and Food Research Center (FoRC), Faculty of Pharmaceutical Sciences, University of São Paulo, Brazil
| | - Kelly Silva Furtado
- Laboratory of Diet, Nutrition and Cancer, Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, Brazil
| | - Juliana Festa Ortega
- Laboratory of Diet, Nutrition and Cancer, Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, Brazil
| | - Tiago Franco de Oliveira
- Department of Clinical and Toxicological Analyses, Faculty of Pharmaceutical Sciences, University of São Paulo, Brazil
| | - Paulo Eduardo Latorre Martins Tavares
- Laboratory of Diet, Nutrition and Cancer, Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, Brazil
| | - Alessandra Vieira
- Laboratory of Diet, Nutrition and Cancer, Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, Brazil
| | - Mayara Lilian Paulino Miranda
- Laboratory of Diet, Nutrition and Cancer, Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, Brazil
| | - Eduardo Purgatto
- Laboratory of Food Chemistry and Biochemistry, Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, Brazil; Advanced Research Center in Food Science and Nutrition (NAPAN) and Food Research Center (FoRC), Faculty of Pharmaceutical Sciences, University of São Paulo, Brazil
| | - Fernando Salvador Moreno
- Laboratory of Diet, Nutrition and Cancer, Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo, Brazil; Advanced Research Center in Food Science and Nutrition (NAPAN) and Food Research Center (FoRC), Faculty of Pharmaceutical Sciences, University of São Paulo, Brazil.
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586
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Bultman SJ. Molecular pathways: gene-environment interactions regulating dietary fiber induction of proliferation and apoptosis via butyrate for cancer prevention. Clin Cancer Res 2014; 20:799-803. [PMID: 24270685 PMCID: PMC3944646 DOI: 10.1158/1078-0432.ccr-13-2483] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Gene-environment interactions are so numerous and biologically complicated that it can be challenging to understand their role in cancer. However, dietary fiber and colorectal cancer prevention may represent a tractable model system. Fiber is fermented by colonic bacteria into short-chain fatty acids such as butyrate. One molecular pathway that has emerged involves butyrate having differential effects depending on its concentration and the metabolic state of the cell. Low-moderate concentrations, which are present near the base of colonic crypts, are readily metabolized in the mitochondria to stimulate cell proliferation via energetics. Higher concentrations, which are present near the lumen, exceed the metabolic capacity of the colonocyte. Unmetabolized butyrate enters the nucleus and functions as a histone deacetylase (HDAC) inhibitor that epigenetically regulates gene expression to inhibit cell proliferation and induce apoptosis as the colonocytes exfoliate into the lumen. Butyrate may therefore play a role in normal homeostasis by promoting turnover of the colonic epithelium. Because cancerous colonocytes undergo the Warburg effect, their preferred energy source is glucose instead of butyrate. Consequently, even moderate concentrations of butyrate accumulate in cancerous colonocytes and function as HDAC inhibitors to inhibit cell proliferation and induce apoptosis. These findings implicate a bacterial metabolite with metaboloepigenetic properties in tumor suppression.
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Affiliation(s)
- Scott J. Bultman
- Department of Genetics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, NC 27599, USA
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587
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Understanding the interactions between bacteria in the human gut through metabolic modeling. Sci Rep 2014; 3:2532. [PMID: 23982459 PMCID: PMC3755282 DOI: 10.1038/srep02532] [Citation(s) in RCA: 180] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 07/26/2013] [Indexed: 12/11/2022] Open
Abstract
The human gut microbiome plays an influential role in maintaining human health, and it is a potential target for prevention and treatment of disease. Genome-scale metabolic models (GEMs) can provide an increased understanding of the mechanisms behind the effects of diet, the genotype-phenotype relationship and microbial robustness. Here we reconstructed GEMs for three key species, (Bacteroidesthetaiotamicron, Eubacteriumrectale and Methanobrevibactersmithii) as relevant representatives of three main phyla in the human gut (Bacteroidetes, Firmicutes and Euryarchaeota). We simulated the interactions between these three bacteria in different combinations of gut ecosystems and compared the predictions with the experimental results obtained from colonization of germ free mice. Furthermore, we used our GEMs for analyzing the contribution of each species to the overall metabolism of the gut microbiota based on transcriptome data and demonstrated that these models can be used as a scaffold for understanding bacterial interactions in the gut.
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588
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Datta P, Yang B, Linhardt RJ, Sharfstein ST. Modulation of heparan sulfate biosynthesis by sodium butyrate in recombinant CHO cells. Cytotechnology 2014; 67:223-35. [PMID: 24468831 DOI: 10.1007/s10616-013-9677-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 12/14/2013] [Indexed: 12/19/2022] Open
Abstract
Sodium butyrate, a histone deacetylase inhibitor, has been used to improve transgene expression in Chinese hamster ovary (CHO) cells. The current study explores the impact of butyrate treatment on heparan sulfate (HS) biosynthesis and structural composition in a recombinant CHO-S cell line expressing enzymes in the heparin (HP)/(HS) biosynthetic pathway (Dual-10 stably expressing NDST2 and HS3st1). Flow cytometric analysis showed that antithrombin binding was increased in Dual-10 cells and basic fibroblast growth factor binding was decreased in response to sodium butyrate treatment. The results were in agreement with the AMAC-LCMS (2-aminoacridine-tagged HS/HP analysis by liquid chromatography mass spectrometry) data that showed that there was an increase in heparan sulfate tri-sulfated disaccharides and a decrease in N-sulfated disaccharides in the butyrate-treated cells. However, we could not detect any changes in the chondroitin sulfate pathway in Dual-10 cells treated with butyrate. The current study is the first to report the effect of butyrate on glycosaminoglycan profiles.
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Affiliation(s)
- Payel Datta
- Department of Biology and Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th Avenue, Troy, NY, 12180, USA
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589
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Donohoe DR, Curry KP, Bultman SJ. Microbial oncotarget: bacterial-produced butyrate, chemoprevention and Warburg effect. Oncotarget 2014; 4:182-3. [PMID: 23563701 PMCID: PMC3712564 DOI: 10.18632/oncotarget.915] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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590
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Abstract
Chromatin modifications have been well-established to play a critical role in the regulation of genome function. Many of these modifications are introduced and removed by enzymes that utilize cofactors derived from primary metabolism. Recently, it has been shown that endogenous cofactors and metabolites can regulate the activity of chromatin-modifying enzymes, providing a direct link between the metabolic state of the cell and epigenetics. Here we review metabolic mechanisms of epigenetic regulation with an emphasis on their role in cancer. Focusing on three core mechanisms, we detail and draw parallels between metabolic and chemical strategies to modulate epigenetic signaling, and highlight opportunities for chemical biologists to help shape our knowledge of this emerging phenomenon. Continuing to integrate our understanding of metabolic and genomic regulatory mechanisms may help elucidate the role of nutrition in diseases such as cancer, while also providing a basis for new approaches to modulate epigenetic signaling for therapeutic benefit.
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Affiliation(s)
- Jordan L. Meier
- Chemical
Genomics Section,
Chemical Biology Laboratory, National Cancer Institute, Frederick, Maryland 21702, United States
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591
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Morgan JLL, Ritchie LE, Crucian BE, Theriot C, Wu H, Sams C, Smith SM, Turner ND, Zwart SR. Increased dietary iron and radiation in rats promote oxidative stress, induce localized and systemic immune system responses, and alter colon mucosal environment. FASEB J 2013; 28:1486-98. [DOI: 10.1096/fj.13-239418] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jennifer L. L. Morgan
- Oak Ridge Associated UniversitiesNational Aeronautics and Space Administration (NASA) Post‐Doctoral Fellowship Program, NASA Lyndon B. Johnson Space CenterHoustonTexasUSA
| | - Lauren E. Ritchie
- Department of Nutrition and Food ScienceTexas A&M UniversityCollege StationTexasUSA
| | - Brian E. Crucian
- Biomedical Research and Environmental Sciences DivisionNASA Lyndon B. Johnson Space CenterHoustonTexasUSA
| | - Corey Theriot
- Department of Preventive Medicine and Community HealthUniversity of Texas Medical BranchGalvestonTexasUSA
| | - Honglu Wu
- Biomedical Research and Environmental Sciences DivisionNASA Lyndon B. Johnson Space CenterHoustonTexasUSA
| | - Clarence Sams
- Space and Clinical Operations Division, Human Health and Performance DirectorateNASA Lyndon B. Johnson Space CenterHoustonTexasUSA
| | - Scott M. Smith
- Biomedical Research and Environmental Sciences DivisionNASA Lyndon B. Johnson Space CenterHoustonTexasUSA
| | - Nancy D. Turner
- Department of Nutrition and Food ScienceTexas A&M UniversityCollege StationTexasUSA
| | - Sara R. Zwart
- Division of Space Life SciencesUniversities Space Research AssociationHoustonTexasUSA
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592
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Abstract
Gene-environment interactions underlie cancer susceptibility and progression. Yet, we still have limited knowledge of which environmental factors are important and how they function during tumorigenesis. In this respect, the microbial communities that inhabit our gastrointestinal tract and other body sites have been unappreciated until recently. However, our microbiota are environmental factors that we are exposed to continuously, and human microbiome studies have revealed significant differences in the relative abundance of certain microbes in cancer cases compared with controls. To characterize the function of microbiota in carcinogenesis, mouse models of cancer have been treated with antibiotics. They have also been maintained in a germfree state or have been colonized with specific bacteria in specialized (gnotobiotic) facilities. These studies demonstrate that microbiota can increase or decrease cancer susceptibility and progression by diverse mechanisms such as by modulating inflammation, influencing the genomic stability of host cells and producing metabolites that function as histone deacetylase inhibitors to epigenetically regulate host gene expression. One might consider microbiota as tractable environmental factors because they are highly quantifiable and relatively stable within an individual compared with our exposures to external agents. At the same time, however, diet can modulate the composition of microbial communities within our gut, and this supports the idea that probiotics and prebiotics can be effective chemoprevention strategies. The trajectory of where the current work is headed suggests that microbiota will continue to provide insight into the basic mechanisms of carcinogenesis and that microbiota will also become targets for therapeutic intervention.
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Affiliation(s)
- Scott J Bultman
- Department of Genetics and Lineberger Comprehensive Cancer Center, University of North Carolina, 120 Mason Farm Road, Genetic Medicine Building Room 5060, Chapel Hill, NC 27599-7264, USA
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593
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Gut P, Verdin E. The nexus of chromatin regulation and intermediary metabolism. Nature 2013; 502:489-98. [PMID: 24153302 DOI: 10.1038/nature12752] [Citation(s) in RCA: 276] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Accepted: 08/16/2013] [Indexed: 12/14/2022]
Abstract
Living organisms and individual cells continuously adapt to changes in their environment. Those changes are particularly sensitive to fluctuations in the availability of energy substrates. The cellular transcriptional machinery and its chromatin-associated proteins integrate environmental inputs to mediate homeostatic responses through gene regulation. Numerous connections between products of intermediary metabolism and chromatin proteins have recently been identified. Chromatin modifications that occur in response to metabolic signals are dynamic or stable and might even be inherited transgenerationally. These emerging concepts have biological relevance to tissue homeostasis, disease and ageing.
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Affiliation(s)
- Philipp Gut
- Gladstone Institutes, University of California, San Francisco, California 94941, USA
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594
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Khan DH, Gonzalez C, Cooper C, Sun JM, Chen HY, Healy S, Xu W, Smith KT, Workman JL, Leygue E, Davie JR. RNA-dependent dynamic histone acetylation regulates MCL1 alternative splicing. Nucleic Acids Res 2013; 42:1656-70. [PMID: 24234443 PMCID: PMC3919583 DOI: 10.1093/nar/gkt1134] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Histone deacetylases (HDACs) and lysine acetyltransferases (KATs) catalyze dynamic histone acetylation at regulatory and coding regions of transcribed genes. Highly phosphorylated HDAC2 is recruited within corepressor complexes to regulatory regions, while the nonphosphorylated form is associated with the gene body. In this study, we characterized the nonphosphorylated HDAC2 complexes recruited to the transcribed gene body and explored the function of HDAC-complex-mediated dynamic histone acetylation. HDAC1 and 2 were coimmunoprecipitated with several splicing factors, including serine/arginine-rich splicing factor 1 (SRSF1) which has roles in alternative splicing. The co-chromatin immunoprecipitation of HDAC1/2 and SRSF1 to the gene body was RNA-dependent. Inhibition of HDAC activity and knockdown of HDAC1, HDAC2 or SRSF1 showed that these proteins were involved in alternative splicing of MCL1. HDAC1/2 and KAT2B were associated with nascent pre-mRNA in general and with MCL1 pre-mRNA specifically. Inhibition of HDAC activity increased the occupancy of KAT2B and acetylation of H3 and H4 of the H3K4 methylated alternative MCL1 exon 2 nucleosome. Thus, nonphosphorylated HDAC1/2 is recruited to pre-mRNA by splicing factors to act at the RNA level with KAT2B and other KATs to catalyze dynamic histone acetylation of the MCL1 alternative exon and alter the splicing of MCL1 pre-mRNA.
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Affiliation(s)
- Dilshad H Khan
- Department of Biochemistry and Medical Genetics, University of Manitoba, Manitoba Institute of Child Health, Winnipeg, Manitoba, R3E 3P4, Canada, Department of Biochemistry and Medical Genetics, University of Manitoba, Manitoba Institute of Cell Biology, Winnipeg, Manitoba, R3E0V9, Canada and Stowers Institute for Medical Research, Kansas City, Missouri 64110, USA
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595
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Brestoff JR, Artis D. Commensal bacteria at the interface of host metabolism and the immune system. Nat Immunol 2013; 14:676-84. [PMID: 23778795 DOI: 10.1038/ni.2640] [Citation(s) in RCA: 642] [Impact Index Per Article: 58.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 05/10/2013] [Indexed: 02/07/2023]
Abstract
The mammalian gastrointestinal tract, the site of digestion and nutrient absorption, harbors trillions of beneficial commensal microbes from all three domains of life. Commensal bacteria, in particular, are key participants in the digestion of food, and are responsible for the extraction and synthesis of nutrients and other metabolites that are essential for the maintenance of mammalian health. Many of these nutrients and metabolites derived from commensal bacteria have been implicated in the development, homeostasis and function of the immune system, suggesting that commensal bacteria may influence host immunity via nutrient- and metabolite-dependent mechanisms. Here we review the current knowledge of how commensal bacteria regulate the production and bioavailability of immunomodulatory, diet-dependent nutrients and metabolites and discuss how these commensal bacteria-derived products may regulate the development and function of the mammalian immune system.
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Affiliation(s)
- Jonathan R Brestoff
- Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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596
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Ellis BC, Graham LD, Molloy PL. CRNDE, a long non-coding RNA responsive to insulin/IGF signaling, regulates genes involved in central metabolism. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2013; 1843:372-86. [PMID: 24184209 DOI: 10.1016/j.bbamcr.2013.10.016] [Citation(s) in RCA: 170] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 10/04/2013] [Accepted: 10/21/2013] [Indexed: 12/18/2022]
Abstract
Colorectal neoplasia differentially expressed (CRNDE) is a novel gene that is activated early in colorectal cancer but whose regulation and functions are unknown. CRNDE transcripts are recognized as long non-coding RNAs (lncRNAs), which potentially interact with chromatin-modifying complexes to regulate gene expression via epigenetic changes. Complex alternative splicing results in numerous transcripts from this gene, and we have identified novel transcripts containing a highly-conserved sequence within intron 4 ("gVC-In4"). In colorectal cancer cells, we demonstrate that treatment with insulin and insulin-like growth factors (IGF) repressed CRNDE nuclear transcripts, including those encompassing gVC-In4. These repressive effects were negated by use of inhibitors against either the PI3K/Akt/mTOR pathway or Raf/MAPK pathway, suggesting CRNDE is a downstream target of both signaling cascades. Expression array analyses revealed that siRNA-mediated knockdown of gVC-In4 transcripts affected the expression of many genes, which showed correlation with insulin/IGF signaling pathway components and responses, including glucose and lipid metabolism. Some of the genes are identical to those affected by insulin treatment in the same cell line. The results suggest that CRNDE expression promotes the metabolic changes by which cancer cells switch to aerobic glycolysis (Warburg effect). This is the first report of a lncRNA regulated by insulin/IGFs, and our findings indicate a role for CRNDE nuclear transcripts in regulating cellular metabolism which may correlate with their upregulation in colorectal cancer.
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Affiliation(s)
- Blake C Ellis
- CSIRO Animal, Food and Health Sciences, Preventative Health Flagship, Commonwealth Scientific and Industrial Research Organization, Sydney, NSW 2113 Australia.
| | - Lloyd D Graham
- CSIRO Animal, Food and Health Sciences, Preventative Health Flagship, Commonwealth Scientific and Industrial Research Organization, Sydney, NSW 2113 Australia.
| | - Peter L Molloy
- CSIRO Animal, Food and Health Sciences, Preventative Health Flagship, Commonwealth Scientific and Industrial Research Organization, Sydney, NSW 2113 Australia.
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597
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Agathocleous M, Harris WA. Metabolism in physiological cell proliferation and differentiation. Trends Cell Biol 2013; 23:484-92. [DOI: 10.1016/j.tcb.2013.05.004] [Citation(s) in RCA: 160] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 05/06/2013] [Accepted: 05/07/2013] [Indexed: 12/25/2022]
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598
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Tsen AR, Long PM, Driscoll HE, Davies MT, Teasdale BA, Penar PL, Pendlebury WW, Spees JL, Lawler SE, Viapiano MS, Jaworski DM. Triacetin-based acetate supplementation as a chemotherapeutic adjuvant therapy in glioma. Int J Cancer 2013; 134:1300-10. [PMID: 23996800 DOI: 10.1002/ijc.28465] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Accepted: 08/20/2013] [Indexed: 11/07/2022]
Abstract
Cancer is associated with epigenetic (i.e., histone hypoacetylation) and metabolic (i.e., aerobic glycolysis) alterations. Levels of N-acetyl-L-aspartate (NAA), the primary storage form of acetate in the brain, and aspartoacylase (ASPA), the enzyme responsible for NAA catalysis to generate acetate, are reduced in glioma; yet, few studies have investigated acetate as a potential therapeutic agent. This preclinical study sought to test the efficacy of the food additive Triacetin (glyceryl triacetate, GTA) as a novel therapy to increase acetate bioavailability in glioma cells. The growth-inhibitory effects of GTA, compared to the histone deacetylase inhibitor Vorinostat (SAHA), were assessed in established human glioma cell lines (HOG and Hs683 oligodendroglioma, U87 and U251 glioblastoma) and primary tumor-derived glioma stem-like cells (GSCs), relative to an oligodendrocyte progenitor line (Oli-Neu), normal astrocytes, and neural stem cells (NSCs) in vitro. GTA was also tested as a chemotherapeutic adjuvant with temozolomide (TMZ) in orthotopically grafted GSCs. GTA-induced cytostatic growth arrest in vitro comparable to Vorinostat, but, unlike Vorinostat, GTA did not alter astrocyte growth and promoted NSC expansion. GTA alone increased survival of mice engrafted with glioblastoma GSCs and potentiated TMZ to extend survival longer than TMZ alone. GTA was most effective on GSCs with a mesenchymal cell phenotype. Given that GTA has been chronically administered safely to infants with Canavan disease, a leukodystrophy due to ASPA mutation, GTA-mediated acetate supplementation may provide a novel, safe chemotherapeutic adjuvant to reduce the growth of glioma tumors, most notably the more rapidly proliferating, glycolytic and hypoacetylated mesenchymal glioma tumors.
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Affiliation(s)
- Andrew R Tsen
- Division of Neurosurgery, Department of Surgery, University of Vermont College of Medicine, Burlington, VT
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599
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Colorectal carcinogenesis: a cellular response to sustained risk environment. Int J Mol Sci 2013; 14:13525-41. [PMID: 23807509 PMCID: PMC3742201 DOI: 10.3390/ijms140713525] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 06/07/2013] [Accepted: 06/14/2013] [Indexed: 12/13/2022] Open
Abstract
The current models for colorectal cancer (CRC) are essentially linear in nature with a sequential progression from adenoma through to carcinoma. However, these views of CRC development do not explain the full body of published knowledge and tend to discount environmental influences. This paper proposes that CRC is a cellular response to prolonged exposure to cytotoxic agents (e.g., free ammonia) as key events within a sustained high-risk colonic luminal environment. This environment is low in substrate for the colonocytes (short chain fatty acids, SCFA) and consequently of higher pH with higher levels of free ammonia and decreased mucosal oxygen supply as a result of lower visceral blood flow. All of these lead to greater and prolonged exposure of the colonic epithelium to a cytotoxic agent with diminished aerobic energy availability. Normal colonocytes faced with this unfavourable environment can transform into CRC cells for survival through epigenetic reprogramming to express genes which increase mobility to allow migration and proliferation. Recent data with high protein diets confirm that genetic damage can be increased, consistent with greater CRC risk. However, this damage can be reversed by increasing SCFA supply by feeding fermentable fibre as resistant starch or arabinoxylan. High protein, low carbohydrate diets have been shown to alter the colonic environment with lower butyrate levels and apparently greater mucosal exposure to ammonia, consistent with our hypothesis. Evidence is drawn from in vivo and in vitro genomic and biochemical studies to frame experiments to test this proposition.
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600
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McGettrick AF, O'Neill LAJ. How metabolism generates signals during innate immunity and inflammation. J Biol Chem 2013; 288:22893-8. [PMID: 23798679 DOI: 10.1074/jbc.r113.486464] [Citation(s) in RCA: 165] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The interplay between immunity, inflammation, and metabolic changes is a growing field of research. Toll-like receptors and NOD-like receptors are families of innate immune receptors, and their role in the human immune response is well documented. Exciting new evidence is emerging with regard to their role in the regulation of metabolism and the activation of inflammatory pathways during the progression of metabolic disorders such as type 2 diabetes and atherosclerosis. The proinflammatory cytokine IL-1β appears to play a central role in these disorders. There is also evidence that metabolites such as NAD(+) (acting via deacetylases such as SIRT1 and SIRT2) and succinate (which regulates hypoxia-inducible factor 1α) are signals that regulate innate immunity. In addition, the extracellular overproduction of metabolites such as uric acid and cholesterol crystals acts as a signal sensed by NLRP3, leading to the production of IL-1β. These observations cast new light on the role of metabolism during host defense and inflammation.
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Affiliation(s)
- Anne F McGettrick
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
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